It is a multi-step process.
1) Download the paperwork and file for a C&R. It will cost you $30 every three years.
2) Once the license comes, mail it off to the usual C&R selling places. But also to Brownell's, Graf's, and MidwayUSA. All three of those places will then sell you loaded ammo and reloading components for dealer prices. For instance, I just placed an order yesterday for 500 Hornady .45 200 grain FMJ bullets. It was $66.
3) Once the wholesalers have your C&R, order your reloading stuff. I would go with the new Lee Classic Turret but you pays your money and you makes your choice. This would also be a good time to order empty brass if you need it. And bullets.
Generally I don't buy powder and primers online. The $17 hazmat fee is painful. (May have even gone up since I last paid it.) It usually seems like a better deal to find a local gunstore or gun show where you buy the powder and primers. Unless you really are going to buy more than five pounds of powder at once. Maybe that would have worked for me when I was first getting started but I've got so much powder now that I rarely buy more than one pound at a time.
For the ultimate in lower costs, you have to cast your own bullets. You can order all that equipment from Graf's and Midway as well. The "fly in the ointment" for that is you need to have a source for scrap lead to make it really worthwhile. I haven't found that place yet so I'm still buying bullets.
If you buy a whole bunch of once fired 9mm brass for some dirt cheap price, you can reload a basic 9mm practice load for not much more than shooting a .22. And don't think of reloading as some kind of drudgery or something. I might have quit shooting over the years if not for the constant curiosity about reloading for some particular gun.
Gregg